What is the name given to elements that have properties in between metals and nonmetals?

Edward Jenner used which disease as a natural vaccine for the deadly smallpox?

What are the two chambers at the bottom of the human heart called?

Human hair and nails are made up of which substance?

In a full set, how many teeth does an adult human have?

ROUGHLY: If the Sun was scaled down to the size of a 25 inch space hopper, what object would you use to represent Earth?

What is the name of someone who studies the stars?

Legend has it that an apple landed on the head of which famous scientist, prompting his laws of gravity?

Marie Curie was famous for her work in which area of research?

What is the largest muscle in the human body?

How many hearts does an octopus have?

Dolly was the first creature to be cloned, what was she?

What is the largest single cell on the planet?

Which scientist famously conceived the theory of evolution by natural selection?

What does this symbol represent in an electric circuit diagram?

The solid form of CO₂ is commonly known as...

Cows emit large amounts of methane by doing what activity?

Where is world's most active volcano?

What is regarded as the hardest known substance on planet Earth?